Robust Transmit Beamforming for Self-Interference Cancellation in STAR Phased Array Systems

被引：9
|
作者：
Shi, Chengzhe [1 ,2 ]
Pan, Wensheng [1 ,2 ]
Shen, Ying [1 ,2 ]
Shao, Shihai [1 ,2 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab Sci & Technol Commun, Chengdu 611731, Peoples R China
[2] Lab Electromagnet Space Cognit & Intelligent Contr, Beijing 100089, Peoples R China
来源：
IEEE SIGNAL PROCESSING LETTERS | 2022年 / 29卷
基金：
中国国家自然科学基金;
关键词：
Array signal processing; Phased arrays; Antenna arrays; Receiving antennas; Interference cancellation; Uncertainty; Stars; Simultaneous transmit and receive (STAR); phased array; self-interference (SI) cancellation; transmit beamforming (TxBF); worst-case uncertainty channel error model; MIMO SYSTEMS;
D O I：
10.1109/LSP.2022.3229641
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In simultaneous transmit and receive (STAR) phased array systems, suffering from the multi-dimensional cross-coupling strong self-interference (SI), the radio frequency (RF) front-end of receive array is severely saturated. Against this issue, we present a transmit beamforming (TxBF) SI cancellation (SIC) design to construct the TxBF vector, where a robust TxBF SIC optimization problem with maximum receive power constraints and a worst-case uncertainty channel error model is formulated, the approximation solution of which is solved by the semidefinite relaxation and S-procedure. Simulation results show that our design effectively avoids the RF front-end saturation at the cost of near-minimum beamforming gain loss within a given uncertainty channel error bound.
引用
收藏
页码：2622 / 2626
页数：5
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